Cisco Systems Cisco 12816 Manuale Utente
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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Chapter 2 Preparing for Installation
GRP Port Connection Guidelines
GRP Ethernet Port Connections
The GRP has the following two types of Ethernet connections (
):
•
RJ-45 media-dependent interface (MDI)
•
40-pin, D-shell type media-independent interface (MII)
Figure 2-13 GRP RJ-45 and MII Ethernet Connections
You can use either Ethernet connection, but not both at the same time. Two LEDs
on the GRP front panel indicate which Ethernet port is active. Each connection
supports IEEE 802.3 and IEEE 802.3u interfaces compliant with the 10BASE-T
and 100BASE-TX standards.
on the GRP front panel indicate which Ethernet port is active. Each connection
supports IEEE 802.3 and IEEE 802.3u interfaces compliant with the 10BASE-T
and 100BASE-TX standards.
Note
The Ethernet port can use either unshielded twisted-pair (UTP) or shielded
twisted-pair (STP) cables. Shielded twisted-pair cables are recommended for sites
at which extremely high immunity to noise is required.
twisted-pair (STP) cables. Shielded twisted-pair cables are recommended for sites
at which extremely high immunity to noise is required.
RJ-45 cable
To repeater
or DTE
H10736
MII cable
To transceiver,
repeater, or DTE
GIGABIT R
OUTE PR
OCESSOR
COLL
LINK
TX
RX
RJ-45
MII